CoChat
Sign Up
Cited by 95Transcranial Magnetic Stimulation StudiesMuscle activation and electromyography studiesPeripheral Nerve Disorders

Voluntary teeth clenching facilitates human motor system excitability

Boroojerdi, B., Battaglia, F., Muellbacher, W., Cohen, L.G.·2000·Clinical Neurophysiology
DOI 10.1016/s1388-2457(00)00279-0
Open this paper in CoChat — free account

Abstract

Objective Voluntary contraction of the teeth is a common maneuver used to facilitate peripheral monosynaptic reflexes. It was the aim of this study to determine the site along the neuraxis where this effect occurs.Methods Focal transcranial magnetic stimulation (TMS) was used to measure recruitment curves, motor thresholds and intracortical inhibition and facilitation from the right first dorsal interosseus (FDI) and tibialis anterior (TA) muscles in seven normal volunteers. Changes in excitability in subcortical structures during teeth clenching were studied using F waves, H reflexes, and brainstem magnetic stimulation.Results Recruitment curves of FDI and TA showed significant facilitation during voluntary teeth clenching indicating an overall enhancement in the motor system excitability. Teeth clenching additionally resulted in decreased intracortical inhibition in the FDI but not in TA, pointing to an intracortical site of enhancement for the hand. Motor evoked potentials (MEPs) following stimulation at the brainstem level and F waves in FDI and soleus H reflex amplitude were also facilitated by teeth clenching, indicating a subcortical site for this effect for the upper and lower extremity. M wave amplitudes did not change.Conclusions The teeth clenching maneuver had a similar facilitatory effect on upper and lower extremities. Cortical and subcortical sites contribute to this effect in a hand muscle while only subcortical sites were identified in this facilitatory effect on the lower extremity.

Integrity signals

Registry

Crossref · 10.1016/s1388-2457(00)00279-0

Cites

22 of 22 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The effects of pulling clenched hands and teeth clenching on both stretch and H-reflex have been examined in separate studies.

    “Although the effects of pulling clenched hands and teeth clenching on both stretch and H-reflex have been examined in separate studies (Boroojerdi et al., 2000, Gregory et al., 2001, Mitsuyama et al., 2017, Sato et al., 2014, Sugawara and Kasai, 2002, Hagbarth et al., 1975, Tuncer et al., 2007)”

    From Standardization of the Jendrassik maneuver in Achilles tendon tap reflex (2018) · cites this paper as Boroojerdi et al., 2000

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Related

Authors
Boroojerdi, B., Battaglia, F., Muellbacher, W., & Cohen, L. G.
Affiliations
National Institutes of Health (US)
Corresponding author
Cohen, L.G.
ORCID
Venue
Clinical Neurophysiology
Publisher
Elsevier BV
Published
2000-06
Volume
111
Issue
6
Pages
988-993
ISSN
1388-2457 (ISSN-L)
DOI
10.1016/s1388-2457(00)00279-0
OpenAlex
W2013882966
Cited by
95
References
22
Citations by year
2026: 2 · 2025: 4 · 2024: 4 · 2023: 2 · 2022: 6 · 2021: 5 · 2020: 4 · 2019: 3 · 2018: 4 · 2017: 5 · 2016: 7 · 2015: 8 · 2014: 4 · 2013: 6 · 2012: 3
FWCI
1.38
Type
journal article
Language
en
Open access
closed
Licence
Locations
  • Clinical Neurophysiology (publishedVersion)
  • PubMed (publishedVersion)
  • RWTH Publications (RWTH Aachen) (submittedVersion)
Funders
Deutsche Forschungsgemeinschaft
Topics
  • Life Sciences › Neuroscience › Neurology › Transcranial Magnetic Stimulation Studies
  • Physical Sciences › Engineering › Biomedical Engineering › Muscle activation and electromyography studies
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Peripheral Nerve Disorders
Keywords
intracortical inhibition, intracortical facilitation, first dorsal interosseous muscle, tibialis anterior, soleus muscle, motor evoked potentials, F-wave, H-reflex, brainstem stimulation, motor threshold, recruitment curves
MeSH terms
Adult, Blinking, Brain, Brain Stem, Bruxism, Electric Stimulation, Electromyography, Female, H-Reflex, Humans, Magnetics, Male, Motor Activity, Muscle, Skeletal, Evoked Potentials, Motor

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review